With xsane the experience has been even worse, causing the scanner itself to hang indefinitely and requiring me to restart the printer/scanner itself. This, too was a bit random, and also required a forcible quitting of the program.
Below is the output from syslog relevant to simple-scan and xsane while running the programs as described until error was encountered. Would it be any help to also install the scanner under Windows and, uh, do something to determine if there is some hardware issue? Thanks for the response. $ grep '\(simple-scan\|xsane\)' /var/log/syslog | grep -v AptDaemon Jan 2 12:54:55 simple-scan: io/hpmud/pp.c 627: unable to read device-id ret=-1 Jan 2 12:56:02 simple-scan: io/hpmud/hpmud.c 214: io/hpmud/hpmud.c: service_to_channel(): sn=HP-LEDM-SCAN Jan 2 12:56:03 simple-scan: io/hpmud/hpmud.c 214: io/hpmud/hpmud.c: service_to_channel(): sn=HP-LEDM-SCAN Jan 2 12:56:18 simple-scan: last message repeated 2 times Jan 2 12:56:29 simple-scan: sane_hpaio_cancel: already cancelled! Jan 2 12:56:29 simple-scan: io/hpmud/hpmud.c 214: io/hpmud/hpmud.c: service_to_channel(): sn=HP-LEDM-SCAN Jan 2 12:57:16 simple-scan: last message repeated 3 times Jan 2 12:57:16 simple-scan: scan/sane/http.c 344: invalid http_status=404 Jan 2 12:57:16 simple-scan: scan/sane/http.c 348: dumping len=260 Jan 2 12:57:17 simple-scan: scan/sane/http.c 188: timeout reading data sec_timeout=1 Jan 2 12:58:07 simple-scan: io/hpmud/musb.c 1460: unable to read data hp:/usb/Officejet_6500_E710a-f?serial=XXXXXXXXXXXXXX: 50 second io timeout Jan 2 12:58:07 simple-scan: scan/sane/http.c 188: timeout reading data sec_timeout=50 Jan 2 12:58:57 simple-scan: io/hpmud/musb.c 1460: unable to read data hp:/usb/Officejet_6500_E710a-f?serial=XXXXXXXXXXXXXX: 50 second io timeout Jan 2 12:58:57 simple-scan: scan/sane/http.c 188: timeout reading data sec_timeout=50 Jan 2 12:59:18 xsane: io/hpmud/pp.c 627: unable to read device-id ret=-1 Jan 2 12:59:18 xsane: io/hpmud/hpmud.c 214: io/hpmud/hpmud.c: service_to_channel(): sn=HP-LEDM-SCAN Jan 2 12:59:32 xsane: io/hpmud/hpmud.c 214: io/hpmud/hpmud.c: service_to_channel(): sn=HP-LEDM-SCAN Jan 2 12:59:38 xsane: last message repeated 2 times Jan 2 12:59:38 xsane: sane_hpaio_cancel: already cancelled! Jan 2 12:59:38 xsane: io/hpmud/hpmud.c 214: io/hpmud/hpmud.c: service_to_channel(): sn=HP-LEDM-SCAN Jan 2 13:00:54 xsane: io/hpmud/hpmud.c 214: io/hpmud/hpmud.c: service_to_channel(): sn=HP-LEDM-SCAN Jan 2 13:01:05 xsane: last message repeated 2 times Jan 2 13:01:05 xsane: sane_hpaio_cancel: already cancelled! Jan 2 13:01:05 xsane: io/hpmud/hpmud.c 214: io/hpmud/hpmud.c: service_to_channel(): sn=HP-LEDM-SCAN Jan 2 13:01:56 xsane: io/hpmud/hpmud.c 214: io/hpmud/hpmud.c: service_to_channel(): sn=HP-LEDM-SCAN Jan 2 13:02:07 xsane: last message repeated 2 times Jan 2 13:02:07 xsane: sane_hpaio_cancel: already cancelled! Jan 2 13:02:07 xsane: io/hpmud/hpmud.c 214: io/hpmud/hpmud.c: service_to_channel(): sn=HP-LEDM-SCAN Jan 2 13:03:09 xsane: last message repeated 3 times Jan 2 13:03:10 xsane: io/hpmud/musb.c 1460: unable to read data hp:/usb/Officejet_6500_E710a-f?serial=XXXXXXXXXXXXXX: 50 second io timeout Jan 2 13:03:10 xsane: scan/sane/http.c 188: timeout reading data sec_timeout=50 Jan 2 13:04:00 xsane: io/hpmud/musb.c 1460: unable to read data hp:/usb/Officejet_6500_E710a-f?serial=XXXXXXXXXXXXXX: 50 second io timeout Jan 2 13:04:00 xsane: scan/sane/http.c 188: timeout reading data sec_timeout=50 Jan 2 13:04:50 xsane: io/hpmud/musb.c 1460: unable to read data hp:/usb/Officejet_6500_E710a-f?serial=XXXXXXXXXXXXXX: 50 second io timeout Jan 2 13:04:50 xsane: scan/sane/http.c 188: timeout reading data sec_timeout=50 Jan 2 13:05:13 simple-scan: io/hpmud/pp.c 627: unable to read device-id ret=-1 Jan 2 13:05:14 simple-scan: io/hpmud/hpmud.c 214: io/hpmud/hpmud.c: service_to_channel(): sn=HP-LEDM-SCAN Jan 2 13:05:14 simple-scan: io/hpmud/hpmud.c 214: io/hpmud/hpmud.c: service_to_channel(): sn=HP-LEDM-SCAN Jan 2 13:06:14 simple-scan: io/hpmud/musb.c 1460: unable to read data hp:/usb/Officejet_6500_E710a-f?serial=XXXXXXXXXXXXXX: 45 second io timeout Jan 2 13:06:14 simple-scan: scan/sane/http.c 188: timeout reading data sec_timeout=45 Jan 2 13:06:59 simple-scan: io/hpmud/musb.c 1460: unable to read data hp:/usb/Officejet_6500_E710a-f?serial=XXXXXXXXXXXXXX: 45 second io timeout Jan 2 13:06:59 simple-scan: scan/sane/http.c 188: timeout reading data sec_timeout=45 Jan 2 13:10:53 xsane: io/hpmud/pp.c 627: unable to read device-id ret=-1 Jan 2 13:10:53 xsane: io/hpmud/hpmud.c 214: io/hpmud/hpmud.c: service_to_channel(): sn=HP-LEDM-SCAN Jan 2 13:11:06 xsane: io/hpmud/hpmud.c 214: io/hpmud/hpmud.c: service_to_channel(): sn=HP-LEDM-SCAN Jan 2 13:11:20 xsane: last message repeated 2 times Jan 2 13:11:20 xsane: sane_hpaio_cancel: already cancelled! Jan 2 13:11:20 xsane: io/hpmud/hpmud.c 214: io/hpmud/hpmud.c: service_to_channel(): sn=HP-LEDM-SCAN Jan 2 13:11:47 xsane: last message repeated 3 times Jan 2 13:11:47 xsane: sane_hpaio_cancel: already cancelled! Jan 2 13:11:47 xsane: io/hpmud/hpmud.c 214: io/hpmud/hpmud.c: service_to_channel(): sn=HP-LEDM-SCAN Jan 2 13:14:04 xsane: io/hpmud/hpmud.c 214: io/hpmud/hpmud.c: service_to_channel(): sn=HP-LEDM-SCAN Jan 2 13:14:55 xsane: last message repeated 2 times Jan 2 13:14:55 xsane: io/hpmud/musb.c 1460: unable to read data hp:/usb/Officejet_6500_E710a-f?serial=XXXXXXXXXXXXXX: 50 second io timeout Jan 2 13:14:55 xsane: scan/sane/http.c 188: timeout reading data sec_timeout=50 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/905451 Title: GUI hangs as if waiting for scanner, scanner finishes but GUI still hangs To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/simple-scan/+bug/905451/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs